# 条件语句while
i = 1
while i <= 5:
    print("今天星期:", i)
    i = i+1
a = 1
while a <= 100:
    print("今天是第：", a)
    a = a+1
# 计算
n = 1
s = 0
while n <= 100:
    s = s+n
    n = n+1
    print(s)
# 遍历循环
for i in [1, 2, 3, 4, 5]:
    print(i)
# range内置函数
for i in range(10):
    print(i)
    print()
